Adjustable jig saw cutting mechanism

Abstract

The utility model discloses an adjustable jig saw cutting mechanism. The blade supporting frames of the adjacent blade assemblies are hinged, the four-connecting-rod structure and the power assembly are combined, the angles of all the blade supporting frames are adjusted under driving of one motor, and therefore curved surface cutting is achieved. The condition that each traditional blade assembly is driven by an independent motor and at least one adjusting motor is adopted is avoided, the form of the saw blade set is controlled through the connecting rod combination, the number of motors needed for adjusting the form of the blade assembly is reduced, energy is saved, and the blade assembly is convenient to replace and maintain. In addition, the number of the blade assemblies and the size and strength of the blade supporting frame can be changed according to the using environment, and the cutter is suitable for cutting any curve.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, concretely relates to a adjustable curve saw cutting mechanism. BACKGROUND

[0002] With the advance of urbanization, the demand for gardening is growing, and in modern landscape pruning, different shapes of shrubs need to be pruned, and these shapes are mostly combinations of various curved surfaces, which poses a huge challenge to unmanned landscape pruning.

[0003] Currently, in the adjustable curve cutting technology, most of them use two track controls in x and y directions to realize curve cutting of the target, or directly use a curve slide rail to cut the target, such as patent CN221793065U, which realizes adjustable cutting of the target by matching the cutting adjustment mechanism with the slide rail. SUMMARY

[0004] Therefore, the utility model provides an adjustable curve saw cutting mechanism, which can realize shape switching of the same saw blade group under different pruning requirements, realize adjustable curve saw cutting, and adapt to the requirements of different shrub hardness and individualized modeling of shrubs.

[0005] The adjustable curve saw cutting mechanism of the utility model is characterized in that it comprises a power assembly, a blade angle adjusting assembly, and a plurality of blade assemblies.

[0006] The blade assembly comprises a blade support frame, a blade mounted on the blade support frame, and a rudder machine, and the blade rotates under the drive of the rudder machine.

[0007] The blade angle adjusting assembly comprises a blade adjusting frame, a blade adjusting connecting rod, a blade central shaft connecting rod, and a fixed rod.

[0008] The power assembly includes a power rod, a blade fixing plate, a telescopic unit, and a motor; one end of the power rod is fixed to the blade adjustment frame, and the other end passes through the blade fixing plate and is connected to the motor; both ends of the telescopic unit are fixed to the blade adjustment frame and the blade fixing plate, respectively, and extend and retract along the axial direction of the power rod.

[0009] Preferably, the telescopic unit adopts a five-point linkage, screw, or X-type linkage mechanism.

[0010] Preferably, the telescopic unit adopts a five-point linkage; the five-point linkage includes a long link, a short link, an initial link, and a link section, wherein the link section is sleeved on the power rod, one end of the long link, the short link, and the initial link are hinged together, and the other end is respectively hinged to the blade adjustment frame, the link section, and the blade fixing plate.

[0011] Preferably, the number of blade assemblies is four or more.

[0012] Ideally, blade assemblies with blade support frames of different strengths are used, depending on the curvature of the target curve.

[0013] Ideally, the length of the blade support frame for each blade assembly is adjusted according to the curvature of the target curve.

[0014] Preferably, baffles are also provided at both ends of the blade fixing plate.

[0015] Ideally, blades with different hardness should be used depending on the hardness of the shrub.

[0016] Beneficial effects:

[0017] This invention achieves curved surface cutting by hinged blade support frames of adjacent blade assemblies and combining a four-bar linkage structure with a power component to adjust the angle of all blade support frames under the drive of a single motor. This invention avoids the traditional method of independent motor drive for each blade assembly and the need for at least one adjusting motor. By using a linkage combination to control the saw blade assembly shape, it reduces the number of motors required to adjust the blade assembly shape, saves energy, and facilitates blade assembly replacement and maintenance.

[0018] This invention can also be adapted to the environment by changing the number of blade assemblies, the size and strength of the blade support frame, making it suitable for cutting any curve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the adjustable curve cutting mechanism of this utility model;

[0020] Figure 2 This is a front view schematic diagram of the adjustable curve cutting mechanism of this utility model;

[0021] Figure 3This is a schematic diagram of the blade angle adjustment assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the power component of this utility model;

[0023] The components are: 1-rotating blade, 2-edge blade support frame, 3-center blade support frame, 4-blade adjusting linkage, 5-blade adjusting frame, 6-blade central shaft linkage, 7-fixing rod, 8-blade fixing plate, 9-baffle, 10-cover, 11-power rod sleeve, 12-blade clip, 13-support frame, 14-long linkage, 15-short linkage, 16-initial linkage, 17-linkage section, 18-power rod, 19-servo motor. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This utility model provides an adjustable jigsaw cutting mechanism, such as... Figure 1 and Figure 2 As shown, it includes multiple blade assemblies, a blade angle adjustment assembly, and a power assembly.

[0026] The blade assembly includes a blade 1, a servo motor 19, and a blade support frame. The blade 1 and the servo motor 19 are mounted on the blade support frame. The blade 1 and the servo motor 19 are connected and rotate under the drive of the servo motor 19 to cut and prune the bushes. There are generally four or more blade assemblies, and the blade support frames of adjacent blade assemblies are connected together by a hinge.

[0027] Blade angle adjustment components such as Figure 3 As shown, the assembly includes a blade adjustment frame 5, a blade adjustment link 4, a blade central axis link 6, and a fixing rod 7. The blade support frame of the edge blade assembly is connected to both ends of the blade adjustment frame 5 via the blade adjustment link 4. Both the blade adjustment link 4 and the blade support frame are hinged. The blade central axis link 6 has a protrusion in the middle, which is hinged to the hinge point of the blade support frame of the central blade assembly. The fixing rod 7 is fixed to both ends of the blade central axis link 6, and the other end of the fixing rod 7 passes through the blade adjustment frame 5 and is fixed to the blade fixing plate 8 of the power mechanism. When the number of blade assemblies increases, the blade adjustment link 4 can be added simultaneously to connect the blade adjustment frame and the blade support frame of the newly added blade assembly.

[0028] Power components such as Figure 4As shown, it includes a power rod 18, a blade fixing plate 8, a telescopic unit, and a drive motor; one end of the power rod 18 is fixed to the blade adjusting frame 5, and the other end passes through the blade fixing plate 8 and is connected to the drive motor; both ends of the telescopic unit are fixed to the blade adjusting frame 5 and the blade fixing plate 8 respectively, and can extend and retract along the axial direction of the power rod 18. The telescopic unit can adopt a five-point linkage, a screw, an X-type linkage mechanism, etc. This embodiment adopts a five-point linkage, such as... Figure 4 As shown, the five-point linkage includes a long connecting rod 14, a short connecting rod 15, an initial connecting rod 16, and a connecting rod section 17. The connecting rod section 17 is sleeved on the power rod 18. One end of the long connecting rod 14, the short connecting rod 15, and the initial connecting rod 16 are hinged together, and the other end is respectively hinged to the blade adjustment frame 5, the connecting rod section 5, and the blade fixing plate 8. The drive motor is installed at the bottom of the power compartment, which is fixed below the blade fixing plate 8. The lower half of the power rod 11 is located inside the power compartment and connected to the drive motor, while the upper half passes through the cover 10 and connects to the five-point linkage, thereby controlling its extension and retraction.

[0029] In this invention, the blade adjustment bracket 5, blade adjustment linkage 4, and blade central shaft linkage 6 of the blade angle adjustment assembly form a four-bar linkage structure. Driven by the power assembly, the angle of the four-bar linkage changes, thereby changing the angle of the blade support bracket hinged to it. Since the blade support brackets of each blade assembly are hinged sequentially, a specific curved surface can be formed. Furthermore, the length and stiffness of each blade support bracket can be changed, utilizing differences in length, deformation strength, etc., to further diversify the curves. Additionally, by replacing blades with different hardnesses, it is possible to cut shrubs of varying hardness.

[0030] In this embodiment, the telescopic unit of the power component also adopts a five-point linkage structure with full linkage, which has stronger geometric stability. By distributing the load through multiple points, it has strong resistance to eccentric load, thereby extending the service life of the equipment. In addition, the five-point linkage device has a larger stroke of telescopic extension compared to screws and X-type linkages, and the control is more precise.

[0031] The specific process of this utility model is as follows:

[0032] Under the control of the control unit, the drive motor drives the power rod to move up and down, which in turn drives the blade adjustment frame 5 to move up and down through the telescopic unit and the blade central shaft connecting rod 6 to move up and down through the fixed rod 7. This causes the blade support frame of the edge blade assembly to rotate by a certain angle through the blade adjustment connecting rod 4 and the blade support frame of the middle blade assembly to rotate by a certain angle through the blade central shaft connecting rod 6, thus completing the angle change between the cutting surfaces of each blade assembly, forming a specific curve, and achieving the purpose of curve cutting.

[0033] Specifically, when the power rod extends forward to extend the five-point linkage, the blade adjustment bracket 5 is raised accordingly, and the 4-blade adjustment linkage extends forward; while the position of the blade central shaft linkage 6 remains unchanged, and the outer blade and the inner blade form a certain angle, which is controlled by the degree of extension and retraction of the power rod; at this time, the radius of curvature of the trimming surface formed by the outer blade and the inner blade points outward.

[0034] When the power rod retracts, the five-point linkage retracts, causing the blade adjustment bracket 5 to move downwards, which in turn causes the blade adjustment linkage 4 to move downwards. The position of the blade central shaft linkage 6 remains unchanged. At this time, the angle between the outer blade and the inner blade decreases until the blades are coplanar. With further retraction, the radius of curvature of the trimming surface formed by the outer blade and the inner blade points inwards.

[0035] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An adjustable jigsaw cutting mechanism, characterized in that, include: Power unit, blade angle adjustment unit, and multiple blade assemblies; The blade assembly includes a blade support frame, a blade (1) and a servo motor (19) mounted on the blade support frame, and the blade (1) rotates under the drive of the servo motor (19); the blade support frames of adjacent blade assemblies are connected by hinges. The blade angle adjustment assembly includes a blade adjustment frame (5), a blade adjustment link (4), a blade central shaft link (6), and a fixing rod (7); wherein, one end of the blade adjustment link (4) is hinged to the blade support frame of the edge blade assembly, and the other end is hinged to the blade adjustment frame (5); the blade central shaft link (6) has a protrusion in the middle, and the protrusion is hinged to the hinge of the blade support frame of the central blade assembly; one end of the fixing rod (7) is fixedly connected to the blade central shaft link (6), and the other end passes through the blade adjustment frame (5) and is fixed to the blade fixing plate (8) of the power assembly; The power assembly includes a power rod (18), a blade fixing plate (8), a telescopic unit, and a motor; one end of the power rod (18) is fixed on the blade adjustment frame (5), and the other end passes through the blade fixing plate (8) and is connected to the motor; the two ends of the telescopic unit are fixed on the blade adjustment frame (5) and the blade fixing plate (8) respectively, and extend and retract along the axial direction of the power rod (18).

2. The adjustable jigsaw cutting mechanism as described in claim 1, characterized in that, The telescopic unit adopts a five-point linkage, screw, and X-type linkage mechanism.

3. The adjustable jigsaw cutting mechanism as described in claim 2, characterized in that, The telescopic unit adopts a five-point linkage; the five-point linkage includes a long link (14), a short link (15), an initial link (16) and a link section (17), wherein the link section (17) is sleeved on the power rod (18), one end of the long link (14), the short link (15) and the initial link (16) are hinged together, and the other end is respectively hinged to the blade adjustment frame (5), the link section and the blade fixing plate (8).

4. The adjustable jigsaw cutting mechanism as described in claim 1, characterized in that, The number of blade assemblies is four or more.

5. The adjustable jigsaw cutting mechanism as described in claim 1 or 4, characterized in that, Blade assemblies with blade support frames of different strengths are used based on the curvature of the target curve.

6. The adjustable jigsaw cutting mechanism as described in claim 1 or 4, characterized in that, The length of the blade support frame for each blade assembly is changed according to the curvature of the target curve.

7. The adjustable jigsaw cutting mechanism as described in claim 1, characterized in that, The blade fixing plate (8) is also equipped with baffles at both ends.

8. The adjustable jigsaw cutting mechanism as described in claim 1, characterized in that, Use blades of different hardness depending on the hardness of the shrub.

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